Pattern synthesis optimization of 3-D ODAR based on improved GA using LSFE method
LONG Wei-jun1, BEN De1, ZHANG Gong1
1.College of Information Science and Technology,Nanjing University of Aeronautics & Astronautics,Nanjing 210016,China;2.Computer Engineering,University of Engineering and Technology,Lahore 540000,Pakistan
Abstract:
Pattern synthesis in 3-D opportunistic digital array radar(ODAR) becomes complex when a multitude of antennas are considered to be randomly distributed in a three dimensional space.In order to obtain an optimal pattern,several freedoms must be constrained.A new pattern synthesis approach based on the improved genetic algorithm(GA) using the least square fitness estimation(LSFE) method is proposed.Parameters optimized by this method include antenna locations,stimulus states and phase weights.The new algorithm demonstrates that the fitness variation tendency of GA can be effectively predicted after several "eras" by the LSFE method.It is shown that by comparing the variation of LSFE curve slope,the GA operator can be adaptively modified to avoid premature convergence of the algorithm.The validity of the algorithm is verified using computer implementation.
Key words: antenna radiation patterns genetic algorithm(GA) opportunistic digital array radar(ODAR) pattern synthesis the least square fitness estimation(LSFE)
DOI：10.11916/j.issn.1005-9113.2011.01.018
Clc Number:TN957.2
Fund:
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Pattern synthesis optimization of 3-D ODAR based on improved GA using LSFE method
本站小编 哈尔滨工业大学/2019-10-23
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